Adjustable top-roll saddle.



L. S. BACHE. ADJUSTABLE TOP ROLL SADDLE.

APPLICATION FILED JUNE 13. I914.

Patented June 6, 1916.

Fig. 4-

WITNESSES amen STATES PATENT OFFICE.

LEIGH S. BACI-IE, OF BOUNDBROOK, NEW JERSEY, ASSIGNOR T0 GRAPHITE LUBRI- CATING COMPANY, OF BOUNDBROOK, NEW JERSEY, A CORPORATION OF NEW JERSEY.

ADJUSTABLE TOP-ROLL SADDLE.

Application filed June 18, 1914. Serial No. 845,843;

To all whom it may concern:

Be it known that I, LEIGH S. BACHE, a citizen of the United States, and a resident of Boundbrook, in the county of Somerset and State of New Jersey, have invented certain new and useful Improvements in Adjustable Top-Roll Saddles, of which the following is a full, clear, and exact description, whereby any one skilled in the art may make and use the same.

The invention relates to what is commonly known as a top roll saddle which is used to hold the top rolls of a spinning frame in contact with the drawing rolls.

The invention relates more specifically to a saddle formed in one piece and so formed and arranged as to its component parts that it may be adjusted to the top rolls whether the full number or a complement of the full number of rolls is employed. Many devices of this general character have been employed and various forms of lubricating devices have been used to provide a saddle which, while in contact with its rolls, would give great efiiciency through receiving lubrication. Ordinarily, such saddles are formed in two parts, with a bottom saddle part resting on the back rolls and with a forward saddle part resting on the forward roll, with various types of adjustments for securing a proper tension upon the several rolls.

It has also been a common practice to utilize a saddle part for the back rolls adjustable with reference to the saddle part of the front roll so that one of the back rolls might be under tension with the front roll. Such devices have of necessity required delicate relative adjustments and provision for lubrication and when made in several parts, are liable to be displaced when re-setting a frame. Ordinarily in the use of a machine, the operator must use great care to properly re-assemble the various parts as a reversal of position of one saddle part with reference to the other would materially interfere with the proper drawing of the yarn.

It is one of the princlpal objects of the present invention to provide a saddle in a single structure which will provide perfect lubrication and which may be adjustedto the full number of rolls or any desired number thereof.

It is a further object of the invention to Specification of Letters Patent.

Patented June 6, 1916.

so that as the saddle is used on the fullcomplement or on any number of the rolls, the

desiredtension may be provided.

Referring to the drawings: Figure 1 is a slde view of the saddle and appurtenant parts showing a set of three rolls inthe ordlnary position to be tensioned'. Fig. 2 is a similar view with the center roll dropped out. Fig. 3 is a similar view to that of Flgs. 1 and 2 with the rearmost back roll dropped out. Fig. 4 is a perspective View of the saddle.

The invention herein described relates to the saddle as a whole and contemplates the use of a single piece of material so formed and treated that it may be utilized with any combination of rolls and with features of adjustability as to tension which will permit its use whethertwo, three or more rolls are employed. 'As illustrated herein, the saddle is shown as applicable to the ordinary gang of three rolls although it is apparent that its form and structure might be varied so that it might be made fully adjustable to a rolls 1,- 2 and 3 have a relative movement 7 with reference to the rolls 4, 5 and 6 and in order to provide a proper tension effect upon the staple which is passed between therolls, a saddle is employed which bears upon the rolls 1, 2 and 3 and exerts a tension effect with reference to them and their cooperating rolls i, 5 and 6. a

As illustrated in the drawings, the saddle consists of a single piece member 7 which is provided with a series of bearing surfaces 8, 9, 10, 11, 12, all of which are effective for 'various positions of adjustment of a saddle.

For instance, as illustrated in Fig. 1, the headxroll .1 isengaged by the bearing surface 8, while the forward back roll 2 is in engagement with the surface 10 and the rearmostback roll 3 is in engagement with the bearing surface 11. 7

In Fig. 2, the surface? engages the ,roll

1. The roll is out of engagement with the saddle and the bearing surface 12 rests upon the bearing surface of the roll 3.

In Fig. 3 the bearing surface 10 controls the roll 1. The bearing surface 11 controls the roll 2 and the bearing surfaces 8, 9 and 12 are inactive.

Upon the upper surface of the saddle 7 are arranged a series of notches 13, 14, 15 which are suitably arranged to be-engaged by a stirrup 16 having a suitable weight or other tensioning device for producing a tension of the saddle with reference to the top rolls. This stirrup 16 may be of any desired form and the stirrup notches may be arranged in any desired manner, though ordinarily they are spaced at a proper distance to give a proper proportional tension for the rolls in whatever sequence or combination they are employed.

As illustrated in the drawings, there are three bearing surfaces 8, 9 and 10 provided for the head roll and there are two bearing surfaces 11 and 12 provided for the back rolls 2 and 8. With this arrangement of bearing surfaces, it is apparent at a moments reference to Figs. 1, 2 and 3 that either of the back rolls may be dropped out and the remaining back roll utilized with reference to the head roll or both back rolls may be employed with the head roll by merely shifting the single piece saddle block 7 and readjusting the stirrup 16 into one of the saddle notches or grooves 13, 14 or 15.

It is to be understood that the saddle might be formed of any desired material or of any composite material so long as it has the relative arrangement of bearing surfaces which will properly locate and index the saddle with reference to the several rolls being employed.

In the event of metal being employed for asaddle, it is quite as obvious that some provision must be made for lubrication but an applied lubricant of any form is liable to run too freely, to gum or to create a gudgeon which is liable to soil the goods.

It is preferred to avoid the liability of soiling by utilizing a material which will be characteristically and inherently a lubricating material. To effect such a desirable result, it is preferred to employ a wood or fiber of analogous nature which has been sat urated and made a homogeneous body of lubricant with a sufiicient resistant characteristic to give strength and durability under wearing conditions. Very excellent results have been attained in a saddle of the character herein defined by impregnating a wood fiber through and through with wax and hydro-carbons under a method fully described in my issue Patents Nos. 1,076,941 and 1,077,252, issued respectively under dates of October 28, 1913 and Nov. 4th,1913. There has also been employed a fiber saturated with waxes and impregnated through and through with graphite. The latter form gives practically a metallic saddle having unusual features of lubrication and ofan absolutely homogeneous nature. The coefficient of expansion of all parts of the saddle are substantially uniform. A saddle so formed is so completely a lubricating member that there is comparatively no heating at any of the bearing points and what littleheat is developed is dissipated without any deleterious effects on any particular part of the saddle structure.

It follows that there are no appreciable changes from expansion due to heating and cooling and therefore the fixed bearing points of the saddle remain what is in effect an absolute constant. Thus, the fixed adjustments for the bearing surfaces with different combinations of rolls and the adj ustments of the tension weights will always provide an exact and perfect adjustment for securing the proper operation of the head and back rolls.

It will be noted that the single piece sad.- dle as illustrated is provided with five hearing surfaces for the three rolls and therefore any combination of adjustment may be effected by shifting the saddle with reference to the several rolls. It is of course apparent also that the stirrup or tension device must be shifted into proper position to give the requisite equalization and distribution of tension on the rolls dependent upon the special combination of rolls which is being used.

It is apparent that the invention is, not strictly limited to the fiber impregnated with a lubricant in. so far as the arrangement of bearing surfaces is concerned, although it is preferred, in order to secure the best results, to utilize an impregnated material which will be self-lubricating. Such a material as referred to eliminates all liability of throwing of oil such as ordinarily tends to soil the goods. This is particularly true in spinning mills located in the semitorrid zones where not infrequently a temperature of 100 or more throughout the mill is a common occurrence. Naturally, with high temperatures of this character, it is most difficult to provide a lubricant which will act efficiently under the high temper atures of summer and the comparatively lower temperatures of winter. Unless the greatest care and the most unusual skill is employed by the operatives, it is impossible to prevent soiling of the goods. The oil employed for lubrication will in time work back upon the rolls and even if the goods are not immediately soiled, the roll coverings must be renewed in order to prevent soiling.

Where the two piece saddle is employed, so constructed that it must be oiled, it is practically impossible for the operative to shift the machine and transpose the rolls from one combination to another without soiling said rolls and incidentally spoiling the goods which are run therethrough.

The impregnation of the wood or fiber with graphite and waxes is not specifically claimed herein as this relates to a process forming the subject matter of a separate application.

lVhat I claim as my invention and desire to secure by Letters Patent is:

1. A saddle block formed in a single piece and provided with a plurality of bearing surfaces for the head roll and bearing surfaces for the back rolls, said bearing surfaces spaced to provide, upon longitudinal shifting of the saddle, operative bearing surfaces for the saddle with reference to the head roll and either of the back rolls with one of the bearing surfaces adjusted upon the head roll.

2. A saddle block formed in a single piece and provided with a plurality of bearing surfaces for the head roll and bearing surfaces for the back rolls, said bearing surfaces spaced to provide, upon longitudinal shifting of the saddle, operative bearing surfaces for the saddle with reference to the head roll and either of the back rolls with one of the bearing surfaces adjusted upon the head roll and means for adjusting a stirrup and tension device with reference to the saddle as adjusted.

3. A single piece saddle having a plurality of bearing surfaces for the head roll and bearing surfaces for the back rolls and inter mediate relief portion in the saddle for freeing one of the back rolls as said saddle is longitudinally adjusted across the axis of said rolls.

4. A single piece saddle having a plurality of bearing surfaces for the head roll and bearing surfaces for the back rolls arranged in sequence along the under side of the saddle and intermediate relief portion in the saddle for freeing one of the back ro'iis as said saddle is adjusted with reference to said rolls, and means for adjusting a stirrup and tension with reference to the saddle.

5. A single piece saddle formed from a homogeneous self lubricating material provided with a plurality of bearing surfaces spaced for adjustment with reference to the head roll and having bearing surfaces for the back rolls, the adjustmentof the bearing surfaces of the saddle with reference to the head roll determining the bearing of said saddle with reference to either of the back rolls.

6. A single piece saddle formed from a homogeneous self lubricating material provided with a plurality of bearing surfaces spaced for adjustment with reference to the head roll and having bearing surfaces for the back rolls the adjustment of the bearing surfaces of the saddle with reference to the head roll determining the bearing of said saddle with reference to either of the back rolls and means for adjusting a stirrup and tension device with reference to the saddle.

LEIGH S. BACHE. Witnesses:

GEO. T. SMALLEY, W. F. JENNINGS.

Copies of this patent may be obtained'tor five cents each, by addressing the Commissioner of Eaten", Wuhinkton, D. 0. 

